Test tube rack

The utility model discloses a test tube rack which comprises a body, the body comprises a first side face and a second side face which are oppositely arranged, the first side face is provided with a plurality of rows of groove sets in the first direction, each row of groove set is provided with a plurality of storage grooves at intervals in the second direction, the first direction is perpendicular to the second direction, the body is rotationally provided with a shielding plate, and the shielding plate is contained in the second side face. When the shielding plate is located on the first side face, the shielding plate at least can shield one row of groove sets. Before the arrangement operation of arranging test tubes on the test tube rack, the shielding plate can be rotated to the first side surface according to operation requirements, so that the storage grooves are shielded, the number of the storage grooves in each row is changed, and the number of the storage grooves in a single row is consistent with th